Window-washer&#39;s guard-clamp.



0. V. PETERSON.

WINDOW WASHERS GUARD CLAMP. APPLICATIVUN FILED APR. 12. um.

Patented Jan. 14, 1919.

l" WMF or'ro v. rn'rnnson, or can PARK, Inninors.

,"iJVINlDUW-WASl-IERS GUARD-GLAIVIP.

Application tiled April 12, 1917.

To all whom it may concer/z Be it known that l, Urro V. PETERSON, asubject of the King of Sweden, who has declared his intention ofbecoming a citizen of the United States, and a resident of the city of(lak Park, county of Cook, and A@tate of Illinois, have invented certainnew and useful Improvements in Vlindow-Nashers Guard-Clamps, of whichthe following is a specification.

My invention relates to improvements in window washers7 guard clampsandhas for its object the production of a device of this character,which will be adapted for ready and expeditious unlocking and release,and in which the movable locking pawl will be effectually guarded andguided in its pivotal movement.

A further object is the production of a guard clamp of the charactermentioned which will be of durable and economical construction, onewhich will be adapted for temporary support when not in use, and which,generally speaking, will be of high efficiency. j

@ther objects will appear hereinafter.

l The invention consists in the combinations and arrangements of partshereinafter described and claimed.

rFhe invention will be best understood by reference to the accompanyingdrawings forming a part of this specification, and in which,

Figure 1 is a fragmentary transverse section through a window, inconjunction with which is shown a window washers guard clamp, embodyingthe invention,

Fig. 2 is a front elevation of the clamp detached,

Fig. 3 is a partially sectional side elevation of the clamp, and

Fig. l is a central vertical section of the clamp, showing the sameengaged with the anchoring` studs provided for engagement therewith uponthe window frame.

The preferred form of construction as illustrated in the drawings,comprises an elongated metallic body 5 provided at its rearward sidewith an elongated, longitu dinally extending, downwardly opening slot 6.The slot 6 is adapted for engagement with the headed studs or bolts 7which are provided in the frame 8 of the window in connection with whichthe guard is emf ployed, as will be readily understood. The

slot 6 is of a width to snugly receive the Specification of LettersPatent.

Patented J an. 14, 1919.

SerialNo. 151,587.

shank or reduced portions of the studs 7,

the heads `,of the latter beingjadapted to engage against the front sideof the clamp body, as clearly illustrated iin Fig. 4:.

j Fivotally mountedupon the clamp body at the front side thereof, on apivotpin 9, is a pawl l0 adapted, when A.in operative position, toengage behind or under the uppermost stud 7 engaged by theclagmp, inorder to lockthe clamp in engagementtherewith, as clearly illustrated inFig. 4. Said pawl is normally held in operative position by means of ahelical compression spring 11 which engages against a finger piece ,orextensionjl, formed upon said pawl, said portion 1Q as well as theadjacent portion of the body of the clamp Ibeing formed with recesses 13and 14, respectively, for the accommodation of the respective ends ofsaid spring. The outer side of theclamp bodyis recessed, as at 15, toaccommodate the pawl extension 12 upon depression of thesame.` Thearrangement is such, as will be seen, that the spring 11 is entirelyinclosed, avoiding the possibility of accidental displacement or iujurywhich might result from exposure of the same. Formed at the lower end`of the clamp body is an eye l16 `adapted for engagement by the guardrope 16` with which the clamp cooperates when in use. Formed at one sideof the eye 16 is a second eye 17 adapted for the support of the waterbucket 17 employed by the window washer, `as clearly seen in Fig. 1. Theeyes 16 and 17 are disposed forwardly of the plane of the rear face ofthe clamp body, so that," when the latter is engaged with `the anchoringstuds 7 of the window frame, said eyes will be spaced from the adjacentside `lof the window 4frame so as to avoid any likelihood of the samebeing broken off and permit of ready and easy engagement with the eye 17of the water bucketsupporting hook. ln guard clamps of this`cliaiacteigpin `use `at the present time, j an eye similar to the eye17 is employed, but the same is positioned at the rearward side of theclamp body where the same is exposed to knocks and jars fre- ,quentlyresulting in the same being broken ofi' and in such a position as torender it ditlicult to engage the water bucket supporting hooktherewith.

Formed at the upper end of the clamp, at the front side thereof, is asort of housing 18, into the lower end of which projects the upper endof the pawl 10, said housing thus serving as a guard or protection forsaid end of the pawl, and the sides of said housing serving as a guideto reinforce the pawl against lateral shifting, as will be readilyunderstood. The front side of the housing 18 is formed with a downwardlyopening slot or notch 19 adapted for engagement with a headed stud 19provided upon the belt 19 which is worn by the window washer in order totemporarily hold or support the clamp, when the same is not in use. Inclamps such as are used at the pres ent time, no provision is made forthe support of the same when out of use, and as a result, the clamps arepermitted to simply dangle at the ends of the guard rope. Vithapplicants arrangement, however, the clamp may be readily and easilyengaged with the supports 19 upon the belt of the washer, and thusconveniently held until again put to use.

With the construction set forth it will be seen that the pawl 10 may bereadily and easily rocked to releasing position in order to disengagethe clamp by simply depressing the finger piece or extension 12 of theclamp, thev latter being advantageously located for convenientengagement by the thumb of the user. In order to afford further means ofVready releasing movement of the pawl. the

upper end portion of the latter is formed comparatively thick so as toafford comparatively wide lateral surfaces 20 adapted for readyengagement by the ngers of the user. One side of the pawl is preferablyformed with two recesses and the other side with a single recess, asclearly seen in Figs. 1 and 2, for ready accommodation of two fingersand the thumb of the user. The clamps are used in pairs, one at each endof the guard rope, and the pawls used in the plamps at the opposite endof the guard rope will be similarly formed, that is, the recesses 20will be arranged so that the single recess or that adapted forengagement with the thumb of the user will be positioned at the sidenext to the user in both clamps.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into eiect, this is capable ofvariation and modification without departing from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails of construction set forth, but desire to avail myself of suchvariations and modifications as come within the scope of the appendedclaims.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

1. A window washers guard clamp comprising an elongated body having alongitudinally extending slot at its rearward side opening at one end ofsaid body, and adapted to receive headed anchoring elements; a pawlpivotally mounted on said body adapted for engagement with an anchoringelement engaging in said slot; a helical compression spring coperatingwith said pawl to normally hold the same in 0perative position, andregistering recesses in said pawl and body engaged by and completelyinclosing said spring, substantially as described.

2. A window washers guard clamp comprising an elongated body having alongitudinally extending slot at its rearward side opening at one end ofsaid body, and adapted to receive headed anchoring elements; a pawlpivotally mounted on said body adapted for engagement with an anchoringele ment engaging in said slot; and resilient means entirely inclosed bysaid pawl and body coperating with said pawl to normally hold the samein operative position, substantially as described.

3. A Window washers guard clamp comprising an elongated body having alongitudinally extending slot at its rearward side opening at one end ofsaid body, and adapted to receive headed anchoring elements; a pawlpivotally mounted on said body adapted for engagement with an anchoringelement engaging in said slot; and resilient means coperating with saidpawl to normally hold the same in operative position, said pawl beingcomparatively thick to form comparatively wide surfaces for engagementby the fingers in rocking said pawl, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence o1' two subscribing witnesses.

OTTO V. PETERSON.

Witnesses JOSHUA R. H. Porrs, HELEN S. LILLIs.

Copies of thi patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C."

